Machine for turning crank-pins and eccentrics.



0 VOGEL.

manner: FOR TURNING 01mm: PINS AND EGOBNTRIGS.

APPLIUATIOH FILED FEB. 19, 1906,

Patented June 1, 1909.

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y G. VOGEL. MAGHINEVFOB TURNINGiU RANK PINS AND BGUENTRIGS.

APPLICATION FILED FEB. 3.9, 1806.

Patented June 1, 1909.

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. 0'. VOGEL. M AUHINE FOR TURNING GBANK PINS AND EUGENTRIGS.

APPLICATION FILED I'EB. 19, 1908.

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0. VOGEL. MACHINE-FOR TURNING GRANK PINS AND BGGENTRIOS.

APPLICATION FILED FEB-19,1906

923,219. V Patented June 1. 1909.

6 SHEETS-SHEET 4.

c. VOGEL. MACHINE FOR TURNING CRANK PINS AND EGGENTRIOS. APPLIQATION FILED ms. 19, 1906.

923,219. Patented June 1, 1909.

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G. VOGEL.

MACHINE FOR- TURNING ORANK PINS AND BGGBNTEIOS.

APPLICATION FILED BBB-19, 1906.

' Patented June 1,1909.

6 SHEETS-SHEET 6.

g NIT Ds ATEsPATENToniuon.

i CHARLES VOGEL, OF FORT LEE, NEW JERSEY.

FOR TURNING CRANK-PINS AND ECOENTRIGS.

fication. I

My inventionirelates to such crank shafts as form parts of various devices in mechanical arts for transmitting the power of a prime mover to a'driven member or mechanism, and my invention relatesp'articularly to a mechanical structure adapted to turn crank pins and eccentrics and true'the crank faces of such shafts, and the sameis an improvement upon the devices shown and described in Letters Patent granted to me Febru ary26, 1901, NO. 668,863. l

The objects sought inthe devices of my present invention are greater latitude of adjustability,absence of lost motion, provisions for taking up wear, a variable or regular feed and a perfectalinement.

In the devices of my present invention the revoluble member-or drum has no other movement thanits rotation which is effected by means of suitable 'gears; the beds at either end of said drum are movable longitudinally of the main stationary bed of the machine." The crankshaft to be turned 6X- I provide devices for connecting these beds tends longitudinally through the drum and is carried by pillow blocks'and a steady rest which in turn are supported by and are adjustable transverselyofthe movable beds.

so as to cause them tomove together in unison in either direction and the parts are so arranged that the pillow blocks may be set as measured with mathematical accuracy so as to bring theaxial center of the work being.

. both bedsfor longitudinally moving the same i and in connectiontherewith a coupling device permits onebed to be moved and adjusted in its relation to the other one, pre

vious to their movement in unison.

I also providea gear of ,the'driving train of gears for rotating the drum, having a yielding function'for taking up any slack or I lost motion in the gears and this drum is provided with means for, taking up the 'wear Specification of Letters Patent.

Patented. June 1, 1909.

Application filed February 19, 1906. Serial No. 301,760.

thereof and causing it to turn without looseness or vibration.

I further provide a star cam feed for the cutter device and a manually actuated regulator and mechanically held device placed in the path of the cam feed to a'greater or lesser extent so as to act thereon in proportion to the extent of: the feeddesired, all of which is hereinafter particularly set forth.

In the drawing, Figure 1 represents an elevation of one side of the machine of my improvement. Fig. 2 is a plan view of the same. Fig. 3 is an elevation at the left hand end of the machine; the crank shaft being in section. dotted line Y, Y, Fig. 1, looking in the direction indicated by the arrow adjacent to said line. Fig. 5 is a vertical section through the revoluble member on the dotted line Z, Z, Fig. 1 looking in the direction of the arrow adjacent thereto. Fig. 6 is a vertical longitudinal section through the revoluble member and the part of the machine within which it turns on a larger scale. elevation showing as a form of my invention a means for connecting the movable beds so as to cause them to move in unison. Fig. 8

Fig. 4 is a vertical section upon the Fig. 7 is a side is a clamp at one side ofthe machine showing the parts of the two movable beds and a form of my invention for connecting the same together to move in unison. Fig. 9 is a vertical longitudinal section on the dotted line X, X, of Fig. 7 looking in the direction of the arrow and of said parts in larger size.

Fig. 10 is a sectional plan in larger size of the connection of the'rodand chain end shown in Fig. 7. Fig. 11 is a side elevation, Fig. 12 a surface elevation and Fig. 13 is a vertical section of the gear of the train of gears having a yielding function to take up the slack or lost motion, the section Fig. 13 being at the dotted line X,X, of Fig. 12. Fig. 14 is a plan and partial section through the feeding device for the cutter bar of the drum in a larger size, the relation of which is apparent once every revolution of the drum or revoluble member; parts of Fig. 17 and 18 are of the same size but of exaggerated size over the similar parts shown in Fig. 2.

The main stationary bed of the machine is advantageously hollow and comprises a lower portion a with rising ends (1 a and a rising central portion a, in the upper surface of which is a transverse groove a. The sliding beds 1), c, are supported upon the bed ends 0 a each bed is provided with transverse double-faced grooves 6 c and with substantially centrally longitudinal racks b 0 which with their adjacent ribs are guided in longitudinal grooves of the bed ends a a Each sliding bed I), c, is provided along one edge with an overhanging portion 2 en gaging the undercut edges of the bed ends, and the opposite sides of the sliding beds are each provided with a skirt 3 to which is connected a plate shown in Figs. 8 and 4 taking underneath the shouldered portions of the bed ends.

I employ pillow blocks 01, e, resting upon and supported by the sliding beds 1), 0; each pillow block being provided with a ribbed base as shown inFig. 7 to fit a groove of the bed and I provide bolts 5 with tapering heads, each adapted to fit in the lower portion of a transverse groove and pass up through the lower portion of the pillow blocks with a nut on the upper end to securely clamp the same in position.

The pillow blocks cl, 6, are provided with cap plates (1 e, and with bolts 4 adapted to connect the said cap plates securely to the pillow blocks when said cap plates extend over the crank shaft 9 resting in saidpillow blocks andfor the purpose of clamping said crank shaft securely in position.

f represents a steady rest with a ribbed base adapted to fit the upper portion of a groove of the sliding bed 0 and to be connected by bolts 5 similar to the bolts 5 hereinbefore mentioned secured in position on said bed. This steady rest is provided with a cap plate f secured thereto by the tap bolts 6. I have shown and prefer to employ in connection with this steady rest a series of substantially radially placed centering and clamping bolts 7, two of which pass down through the cap plate f two up through the lower portion of the steady rest and two through the vertical side members for the purpose of receiving and supporting and fixing in position the crank g of the crank shaft secured in the machine; and g Fig. 1 represents the crank pin that is being turned by the cutting tool.

Along one edge of each of the sliding beds 5, c, I secure guide plates 8, 9, by suitable bolts (see Figs. 1 to 4).

The pillow blocks are provided with suitable removable bushings for shafts of various diameters; the bushings fitting the pillow blocks snugly receive the shaft to be turned, therefore the center of a shaft to be turned always bears the same relation to the pillow blocks and to the end of the pillow blocks coming next to the said guide plates 8, 9, and the parts are so proportioned that when the pillow blocks are brought right up snugly against the plates 8, 9, their shaft centers exactly agree with the axial center of the drum or revoluble member h and when these pillow blocks are otherwise set they should be in such position as to be at exactly the same distance from the said guide plates 8, 9, otherwise they would not be strictly in alinement and their alinement would not be strictly in a plane parallel with a plane passing through the axial center of the drum or revoluble member it; these positions and measurements being strictly essential for the accurate placing of the work.

The steady rest f in its relation to the shaft supported by the pillow blocks is to be so placed as to receive one side of the crank, the pin of which is being turned by the cutting tool; said steady rest serving materially to take up and counteract the strain of cutting the crank pin, and the bolts 7 thereof being readily positioned so as to accurately support and hold said crank.

The drum 72 or revoluble member is cylindrical and tubular and in the cross section Fig. 6, off-set and tapering, and it is received in a head block 7) supported upon the center bed a of the machine; this head block i preferably having a rib 10 received in the groove a of the center bed; bolts shown in Fig. 1 being employed to secure this head block in position. This drum at one end is provided with a peripheral gear h which forms the off-set portion of the drum coming against the face of the head block, (see Fig. 6) and at the other end of the drum I provide an off-set adjustable clamping ring 71 connected by the tap bolts 11 to the drum and adapted. to take up any wear of the drum caused by continual use.

I provide pinions i i one at either side of the machine meshing. with the gear h and these pinions are on shafts in the bearing plates 12, 13, secured to the opposite sides of the head block i; there being gears 76, k on the opposite ends of these shafts so that in the operation of the machine when the gears 10, 75 are rotated, their shafts and the pinions i W, are also rotated to turn the drum or revoluble member within the head block.

A power shaft Z is provided and there are bearings 14, 15, therefor upon the sides of the bed of the machine. This power shaft is driven by a belt around the stepped-pulleys Z and on this power shaft Z there are other and smaller stepped-pulleys? and a pinion Z The pinion Z meshes with a gear wheel m of a train of gears m, m m having suitable shaft bearings on thebed center a the gears m, m, meshing with one another.

7c, k and the pinions i, i? to rotate the drum or 'revoluble member and the proportion of said gears is so arranged that exactly the same speed of rotationis imparted to the gears k, F, their shaftsa nd the pinions i 01 To a -bracket117, Figs. 1 and 2, secured to the bed end a I connect a fixedshaft 16 and on a sleeve mounted on said shaft are the steppedpulleys wand pinion '0 the same being rotated by a belt a passing around the stepped-pulleys Z and n, thepower and rotation of the powersha'ft being thus trans mitted, I

Iprovide a shaft'o in bearings 18, 19, secured to the bed ends a, a 1 On this shaft at one end is a gear In? meshing with the pinion n and by this gear rotation is communicated to the shaft .0,and on theother end of this shaft 0 is a gear o and intervening sleeve 0 I provide brackets 20 secured to the end a) and on these brackets there is a shaft carrying a worm 21 and onthe right hand end of this shaft (see Fig. 1) is a gear 22. The Worm 21 meshes with the worm wheel r on the shaftrthat passes transversely of the bed end a of the machine in suitable bearings provided therefor. On this shaft 1" and adjacent to the wormwheel r? is a hub r with radial arms, and IQprovide clamp arms r uponlthei end of this shaftsadjacent to the hub r and a pinion Won the opposite end of the shaft 1" on the other side of the machine.

Referring particularlyto Figs. and 16, a bracket 24 is secured to the bed end 0. and the same is provided with a sleevefor the shaft 25. Onthe outerend of this shaft 25 is a hand wheel 26 or handle and on the other end a disk 27 having a 'pin 28 passing through v a sliding bushing or bearing block 29 movable in a slot of the arm 32. In this bracket 24 I provide a'spring latch device 30 whose end is adapted'to engage one of several recesses of the disk 27. On the sleeve 0 of the shaft 0 is a sleeve 31 preferably formed integral or connected with the arm 32, and the gears 34, and 36 are secured to this arm 32 upon pins 33there being outside of the gears a plate 37 so that between the arm 32 and the plate 37 there are the gears 34. 35, 36 and 0 ;34 and; 35 being in mesh,35 in mesh with 01 and .36 also in mesh with 0-.' The sleeve .31, is arranged to turn on the sleeve 0 of the shaft 0 and the hand wheel 26, thedisk. 27, "the pin '28 and the bushing 29 are'the means for turning this sleeve 31 and attached. arm'32 and the spring latch the meanslfor holding the same as set, the object sought being to rock the arm 32 so as be moved longitudinally.

the bed 0; the two so'as to transmit the feed movement received from the power shaft Z through the steppedpulleys Z and n, and the gears n and M, to the sliding beds in one direction or through the meshing of the gears 36 and 22 to transmit the feed in the other direction. Upon returning the parts to the position shown in Fig. 15, when neither gear 34 or 36 is inmesh with the gear 22; (the parts being in a vertical position:) then in this position the devices operating the gear 22 and said gear would be free to rotate without doing any work, therefore by the turning of the handle 26 and the disk 27 with the pin 28 in one direction, the gears 34 and 22 are brought into mesh and in the opposite direction the gears 36 and 22 are brought into mesh.

By the devices just described the feed communicated by the power shaft and by intermediate devices to the shaft 0 is com municated in one direction by the gear 36 to the gear 22 or by the gear 35 and 34 to the gear 22 in the opposite direction because of the use of an intermediate gear 35.

When the parts are in the disconnected position shown in Figs. 15 and 16 a hand feed to a limited extent may be effected by means of the hub and radial arms r made effective on the shaft 1' by releasing the friction clamping device r which is the same as that shown in Fig. 5 of my Letters PatentNo.

same shaft outside of the gear 8 there is a sprocket s and on the same shaft inside of the hollow bed end there is a pinion 38 meshing with a gear 39, which in turn engages the rack c of the longitudinally movable bed 0. This gear 39 is on a suitable shaft in suitable bearings and by thesedevices the bed 0 may The bed 0 and the bed I) where light work I is to be performed may to advantage be connected as shown in Fig. 8, that is, by the bar 44 at one end secured in the clamp head 42 on one side of the bed I) and at the other end secured in the clam head 43 on one side of eds moving together in unison by these means.

For larger or heavier work I prefer the structure shown in Fig. 7 in which the sprocket s on the shaft 8 is employed and a sprocket s on a shaft t passing through the" bed end a in suitable bearings is employed in connection with a chain 25 which passes around the sprockets so as to communicate I the rotation and the power of the shaft 1" and I {shaft .9 to the shaft i to connect eitherthe'gear 34 with the gear 22 As shown in Fig. 7, chain members 25 are ment.

connected centrally by bars 75 with threaded ends in opposite directions engaging couplers t for the purpose of providing a tension to the chain t so that there will be no lost motion. The central portions of the bars t being by preference squared for the application of a wrench or similar instrumentality for turning the same.

Upon the shaft t within the hollow bed end a is a pinion 40 meshing with a gear 41 on a suitable shaft having suitable bearings in said bed end; the gear 41 meshing with the rack b of the bed I) and by these devices the beds 1) c are moved in similar directions simultaneously.

Referring to Fig. 9 with reference to the shaft i and sprocket s I provide a bearing sleeve 45 in the hollow bed end a for this shaft. A clutch member 46 is connected to the shaft t by a key 47 and a lock nut 48 and a sprocket s is provided with the clutch member 49 adapted to engage the clutch member 46 frictionally so as to communicate the power and rotation of the chain 75 by the clutch device to the shaft 25 the coupling handle 50 threaded on the outer end of the shaft i being employed for forcing the sprocket and its clutch member 49 in forceful contact with the clutch member 46 for the performance of this function.

Referring now to the train of gear devices for rotating the drum IL or revoluble member, which gears carry the reference letters m, m m and engage the gears 7c, A, I construct the gear 7c in a peculiar manner. (See especially Figs. 11 to 13 inclusive.) Upon the shaft k of said gear k I secure a hub 51 provided with two opposite segment members 52 and the web of the gear k is received around this hub 51 and is held in place on the shaft longitudinally by a nut and washer 57. A disk 54 fits within the recessed face of the Web of the gear 16 back of the segments 52 and to this disk 54 I secure segments 70 oppositely placed and held by bolts 53, which pass through the segments 75 through the disk 54 into the web of the gear k thus making the gear 16 loose on the shaft W, the looseness being controlled by the spaced apart relation of the segments k with regard to the segments 52 of the hub 51. In corresponding edges of the segments k I place tap bolts 55 and in the opposite corresponding edges of the segments k rubber blocks 56; these edges of the segments k being recessed for said blocks so as to prevent accidental displace- The blocks 56 contact with the adjacent surfaces of the segments 52 and 763, and

the bolts 55 being unscrewed just sufficient for the heads thereof to come into a close relation with the adjacent edges of the segments 52.

In Fig. 12 there is an arrow on the gear k showing its direction and motion and as it is turned by the train of gears hereinbefore described, the disk 54 and segments 70 turn with it, consequently the rotary movement communicated therefrom to the shaft k is through the rubber blocks 56 and hub 51 and so by the shaft k to rotate the pinion on the other end of said shaft. By this device I take up the slack of the train of gears and provide for any uneven movement with respect thereto and to the gear k Referring particularly to Figs. 1, 2, 3, 4, and 14, it represents the cutter frames secured at opposite points of the drum h, u the cutter bar movable in said frames; 10 the cutting tool in the jaw n of said bar. These parts are held in position by the screw stem w" engaging the upper end of the cutter bar u and the feed of said cutter bar and cutter being produced by the rotation of this screw stem and the star cam 10 at the upper end of said stem.

I provide yielding manually actuated devices for turning the star cam for effecting this feed, which devices are shown particularly in Figs. 17 and 18 in which '0 is a frame secured on the surface of the bed end a and having slideways in which is a slide-plate v with beveled edges. A plate 57 also being employed with bolts 58 to take up any lost motion and provide a snugness of longitudi nal movement for the slide-plate 12 To the right hand end of this slide-plate v is connected a pivot rack 02 shown as provided with four teeth and a spring 02 bolted to the face of the slide-plate v bears at its free end upon the pivoted rack 12 a depending post 42 is formed at the opposite end of the slideplate c and I provide in a bracket 59 secured upon the surface of said bed end a rod 60 at the lower end of which is a crank 61, and a rod 62 is at its respective ends pivotally connected to the crank 61 and to the post 12 I provide a disk 63 having rack teeth on its periphery, which disk overlies the upper part of the bracket 59 and is secured thereto. The rod 60 passes through the bracket and through this disk and attached to its upper projecting end is a crank arm and handle 64 to which is pivoted a spring pawl 65. Longitudinal movement imparted to the slideplate 12 is given by the crank arm 64, rod 60, crank 61, rod 62 and post '0 and the position in which this slide-plate o and pivoted rack 12 on the end thereof are placed is held by the spring pawl 65 which is of course to be disengaged from the rack teeth of the disk 63 to change the position of the slide-plate v and its pivoted rack. In the operation of these parts for effecting the feed of the cutting tool it will be apparent, especially with reference to Figs. 1 and 2, that when the drum in its rotation brings the star cam a into the path of the rack e that the same Will engage the rack and will be turned and that this turning movement will turn the screw stem 14 and feed the cutting tool.

twi

' In Fig.-1'7I Mathews a straight dotted I parallel with this dotted line, but of course when released the spring '0 will return the rack to'this initial position. It will therefore be apparentthat in the rotation of the drum a tooth of the star cam would in the position of the parts, (Fig.1?) come into engagement with the last tooth of the rack 42 Also if this rack is moved farther to the right the teeth of the star'cam' will engage two or more of the teeth of the rack, and if the rack is moved farther to the right it is possible for the teeth of thestar cam to engage all of the teeth of the rack so that instead of turning one'or two teeth it will turn four teeth and so increase the feed. Thislongitudinal movement of the rack v as hereinbefore described, being effectedby the crank arm and handle 64. Any number of teeth desired may be employed on the rack v The yielding function of the rack 12 is further useful in two ways viz: in' producing a striking and turning device for the star cam 11/ that is not unyielding because an unyielding device produces a hammer-like blow, whereas with the device of my invention the contact is easily I I and gradually made and without injury to the parts, and further should the rack o be accidentally and unintentionally moved too far into the path of thestar cam effecting too great a movement and feed which would I tend :to force the cutting tool deep into the work, said rack requiring less force for its movement than the cutting tool would be swung completely back out of the way, the star cam passing by without doing any actual work.,@ I

From the foregoing description and from the illustration, it will be apparent that the crank shaft to be trued and worked by the cutting tool passes through the hollow drum,

' is supported and its position determined by the placing of thespillow blocks 01, e, and by the steadyrest f; that'the rotation of the drum and the cutting tool carried thereby are effected by the power shaft Z, the train of gears operated thereby and the gears 7c, M,

and i i that any wear produced by the constant use of the rotary drum is taken up by means ofthe clampring 7L2 and the bolts 11;,that rotationand power are co1nn1unicated bythe stepped-pulley on the power shaft and the belt 71, to the stepped-pulley n, pinion-n gearn andshaft 0 to the gear 22.

Through the intervention of the devices shown in Figs. 15 and-16 the worm 21 and worm wheel 1"? by the shaft 1" and the devices shown in Figs. 7, and'8 are caused to move the longitudinally movable beds 1), c, in unison. a A tension is applied to the power chain,

10. The movement transmitted from the devices co-acting with the bed a is made effective with the bed I) or disconnected by the clutch device shown in Fig. 9; that a yielding movement with regard to the train of gears is effected by the device shown in Figs. 11 to 13 inclusive and that the feed of the cutting tool is eflected by the star cam a and the rack 12 with every revolution of the drum by the position to which the rack v is manually placed by the device described in connection therewith.

I claim as my invention:

1. In a turning machine for cranks and eccentrics, the combination with a main bed, a central revoluble drum in an elevated position and longitudinally movable beds at the opposite ends of the main bed also in elevated positions, of a bar longer than the intervening gap between the longitudinally movable beds andnieans for rigidly connecting the said bar near its opposite ends to the sides of the said movable beds and means for actuating one of said beds and through said bar the other bed.

2. In a turning machine for cranks and eccentrics, the combination with the longitudinally movable beds, a shaft 1" and means for turning said shaft, of a pinion on said shaft, a shaft 8 a gear on said shaft meshing with said pinion, a pinion on the shaft 8 a gear meshing therewith and a rack on one of said beds with which the latter inion is in mesh, a shaft i sprockets on t e shafts s and t and a chain passing around over the same, a pinion on the shaft 25 a gear meshing therewith and a rack on the other longitudinally movable bed meshing with the latter gear whereby the rotary movement and the power from the first shaft transmitted to one bed is simultaneously and to the same extent transmitted to the other beds for moving the beds in unison.

3. In a turning machine for cranks and eccentrics, the combination with a revoluble drum, its cutter bar and cutting tool, of a feed screw and star cam secured to the drum for efiecting the feed of the tool with the rotation of the drum, a pivoted rack and mov able su port therefor secured to the side of the be of the machine and adjustable toward the path of the star cam and manually operated devices for placing and holding said pivoted rack in position.

4. In a turning machine for cranks and eccentrics, the combination with a revoluble drum, its cutter bar and cutting tool, of a feed screw and star cam secured to the drum for efiecting the feed with the rotation of the drum, a frame having slide-ways and a slideplate therein, the latter arranged to move toward and from the plane of movement of the star cam, a pivoted rack secured to one end of said slide-plate, a spring for maintaining the said rack ina predetermined position; g spring held rack adapted to be engaged by a disk with a rack edge, a crank arm, a pawl I the star cam in its movement, substantially and rod manually actuatedand a crank rod as described, and means for effecting and 15 connecting the same to the said slide-plate whereby the pivoted rack is moved or returned into the desired position and held, or is moved out of the Way of the star cam at the pleasure of the operator.

5. In a turning machine for cranks and eccentrics, the combination with a revoluble l moving cutting tool and a star cam for eiieoting the feed movement thereof, of a pivoted l controlling the movements of the said rack and so adjusting its position with respect to the plane of the path of the star cam.

Signed by me this 16th day of February CHARLES VOGEL. \Vitnesses:

GEO. TNPINCKNEY, E. ZAOHARIASEN. 

